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Just the smell of an invasive species of gecko suppresses egg laying and subdues aggression in a resident.
Changing the toys in a parrot's cage may ease the bird's tendency to fear new things.
When a female Japanese quail watches two males clash, she tends to prefer the loser.
The little reef fish that nibble parasites off bigger fish that stop by for service actually prefer to nibble the customers.
Birds in noisier city spots tend to sing at a higher pitch than do members of the same species in quieter neighborhoods.
Videotapes of yellow garden spiders show that if a female doesn't murder her mate, he'll expire during sex anyway.
The first measurements of energy use in migrating songbirds confirms that birds burn more energy during stopovers along the way than during their total flying time.
In a Malaysian ant species, the large workers establish a hierarchy by engaging in spectacular shaking contests.
A south African dung beetle is the first animal found to align its path by detecting the polarization of moonlight.
An otherwise rare system of sex determination has evolved independently at least six times in one genus of South American mice.
The first tests of temperature control in African cicadas have found species with a strategy that hogs energy but reduces the risk of predators.
The search is on for creatures that have evolved for eons without sex.
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